Beer Foam IA

Extracts from this document...

Introduction

Physics SL II Purvansh Trivedi

Period C 25/10/10

Calculating Values and Placing in Tables

For the Beer Foam Experiment, the main objective was to calculate the exponential decay of the foam in the beer when initially poured. Since it is impossible to count how many bubbles there are in the foam, we must use a formula to derive the exponential decay using the level of the beer until all the foam has evaporated.

After removing the outliers, it is possible to determine the final decay constant of the beer foam. Since the slope of the line of best fit is -0.00712, it is possible to assume that it is the same as the negative decay constant, -λ.

So the decay constant is λ = 0.00712. The maximum λ is 0.01580 and the minimum λ is 0.00100. It seems from this that the uncertainty is 0.0074.

Related International Baccalaureate Physics essays

on the extremes of the first and last data point uncertainty bars. Figure 1.4 Conclusion and Evaluation In Figure 1.3, which is the first graph of our results, there seems to be a direct relationship between the increase of time and the increase of height in the experiment.

would support my theory that you can in fact model radioactive decay but if it doesn't illustrate an exponential curve then it wouldn't support my theory. Conclusion and Evaluation Conclusion: In essence, the results support my theory that it is possible to model radioactive decay using coins.

This process was repeated another 2 times, 10. Results were recorded. 11. Steps 6-9 were continued, instead replacing the 20km/h with 30km/h then again with 40km/h. 12. The recorded video was then transferred into the programme "virtual dub" to find the time it took for the car to travel 5m.

> Displacement (x): Using 100cm ruler to measure the displacement x. The ruler should be long enough because if the x is about 100cm it's not possible for the spring using in the physics lab. > Acceleration due to gravity (g): As long as the experiment performed at the same location then acceleration due to gravity will remain constant.

If the bubbles are of uniform size, then the volume of the head is proportional to the number of bubbles. The beer holder in this experiment will be a measuring cylinder. The cylindrical shape will allow us to relate easily the change in volume with the change in height.

P55 Magnitude force on a current: Magnitude of the electric field: (B) = F/ILsin(O) I=Current L=Length of Current Sin (O) = sin of the angle between the field and current F=BIL sin (O) where F is in (T) for tesla.